We present an analysis of top-antitop quark production and decay into a tau lepton, tau neutrino, and bottom quark using data from 9 fb(-1) of integrated luminosity at the Collider Detector at Fermilab. Dilepton events, where one lepton is an energetic electron or muon and the other a hadronically decaying tau lepton, originating from proton-antiproton collisions at root s = 1.96 TeV, are used. A top-antitop quark production cross section of 8.1 +/- 2.1 pb is measured, assuming standard-model top quark decays. By separately identifying for the first time the single-tau and the ditau components, we measure the branching fraction of

Study of top quark production and decays involving a tau lepton at CDF and limits on a charged Higgs boson contribution

MARINO, PIETRO;MORELLO, MICHAEL JOSEPH;
2014

Abstract

We present an analysis of top-antitop quark production and decay into a tau lepton, tau neutrino, and bottom quark using data from 9 fb(-1) of integrated luminosity at the Collider Detector at Fermilab. Dilepton events, where one lepton is an energetic electron or muon and the other a hadronically decaying tau lepton, originating from proton-antiproton collisions at root s = 1.96 TeV, are used. A top-antitop quark production cross section of 8.1 +/- 2.1 pb is measured, assuming standard-model top quark decays. By separately identifying for the first time the single-tau and the ditau components, we measure the branching fraction of
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11384/59580
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